it's a single pimple that is very painful when squeezed, touched, or brushed against by my clothing. it has purple or bluish tinge to the top but not the base. it causes a sharp pain like nothing ive ever experienced before, all the way up my stomach and down the nearest thigh. ive been having more and more pimples of the same kind but not as nearly painful, and without the purple coloration, located on my chin, the small of my back toward the hip, etc. i'm in no way sexually active so something like herpes is off the table. the pimple isn't on my labia or even really near my genitals. it's on my pelvic bone about an inch or two from my left thigh.